Companion object that facilitates the importing of OptionValues members as
an alternative to mixing it in. One use case is to import OptionValues's members so you can use
value on option in the Scala interpreter:

scala> opt2.value should be < 10
org.scalatest.TestFailedException: The Option on which value was invoked was not defined.
at org.scalatest.OptionValues$Valuable.value(OptionValues.scala:68)
at .<init>(<console>:18)
...